CCN 99434581
OPERATOR’S MANUAL
66300-XXX
INCLUDING: SERVICE KITS, TROUBLESHOOTING, PARTS LIST,
DISASSEMBLY & REASSEMBLY.
RELEASED: 12-15-95
REVISED:
8
-
25
-1
1
(REV.
J
)
TWO-BALL STYLE
LOWER PUMP ENDS
Also covers 637305-X43 service kits
READ THIS MANUAL CAREFULLY BEFORE INSTALLING,
OPERATING OR SERVICING THIS EQUIPMENT.
It is the responsibility of the employer to place this information in the hands of the operator. Keep for future reference.
SERVICE KITS
Use only genuine ARO® replacement parts to assure compat-
ible pressure rating and longest service life.
637305-X43 for general repair of 66300-XXX lower pump ends.
GENERAL DESCRIPTION
WARNING
DO NOT EXCEED MAXIMUM OPERATING PRES-
SURE AS INDICATED ON PUMP MODEL PLATE.
WARNING
REFER TO GENERAL INFORMATION SHEET FOR
ADDITIONAL SAFETY PRECAUTIONS AND IMPORTANT IN-
FORMATION.
This manual only covers the lower pump section. It is one of
four documents which support an ARO pump. Replacement
copies of these forms are available upon request.
650XXX-X Pump Model Operator’s Manual.
General Information for Air Operated or Hydraulically Oper-
ated Pumps.
Lower Pump End Operator’s Manual.
Air or Hydraulic Motor Operator’s Manual.
The two-ball design provides better priming of the lower foot
valve. The double acting feature is standard in all ARO indus-
trial pumps. Material is delivered to the pump discharge outlet
on both the up and down stroke.
MAINTENANCE
The air / hydraulic motor is completely separate from the lower
pump end. This helps to keep the motor from being contaminated
by the material being pumped. Periodically, flush entire pump
system with a solvent that is compatible with the material being
pumped.
Keep solvent cup fi lled with this compatible solvent. This will keep
material from drying on the piston rod, which would drag thru the
packings, ruin them and eventually scour the piston rod.
Provide a clean work surface to protect sensitive internal moving
parts from contamination from dirt and foreign matter during dis-
assembly and reassembly.
Before reassembling, lubricate parts as required. When assembling
“O” rings, or parts adjacent to “O” rings, exercise care to prevent
damage to “O” rings and “O” ring groove surface.
TROUBLE SHOOTING
No material at outlet (pump continually cycles).
Check material supply. Disconnect or shut off the air supply
and replenish the material, reconnect.
Material on one stroke only (fast downstroke).
The (21) lower ball may not be seating in the (22) seat (see
lower pump disassembly). Remove the ball from the seat, clean
and inspect the ball and seat area. If the ball or seat is dam-
aged, replace.
Material on one stroke only (fast upstroke).
Check for worn or damaged packings and seals. Replace the
packings and seals as necessary.
Material leakage out of the solvent cup or material appears on
the pump plunger rod.
Relieve the pressure in the pump and tighten the solvent cup
until leakage discontinues. If this procedure does not aid in
stopping the leakage problem, the upper packings may be
worn (see lower pump disassembly). Replace the packings as
necessary.
LOWER PUMP END DESCRIPTION CHART
66300 - X X X
Service Kit Selection
Example: Lower Pump End # 66300-C47
Service Kit # 637305-C43
66300 - X X X
Packing
637305 - X 4 3
Packing Material
3 - Glass fi lled PTFE (upper and lower)
C - UHMW-PE (upper and lower)
G - UHMW-PE / Leather staggered (upper and lower)
P - UHMW-PE / Glass fi lled PTFE staggered (upper)
-
UHMW-PE
(lower)
R - Glass fi lled PTFE / UHMW-PE staggered (upper)
-
Glass
fi lled PTFE (lower)
Plunger Type
3 - Hardened stainless steel with hard chrome plating
B - Hardened stainless steel with ceramic coating
D - Hardened stainless steel with hard chrome plating
(large motors)
G - Hardened stainless steel with ceramic coating (large
motors)
Spring Arrangement
4 - Multiple wave spring with 316 stainless steel balls
7 - Multiple wave spring with 440 stainless steel balls
INGERSOLL RAND COMPANY LTD
209 NORTH MAIN STREET – BRYAN, OHIO 43506
(800) 495-0276
FAX
(800) 892-6276
© 201
1
www.ingersollrandproducts.com
